Citation

Revell K, Allison C, Sears R, Stanton N. Ergonomics 2019; 62(2): 156-170.

Affiliation

Human Systems Integration Group, Faculty of Engineering, Environment and Computing , Coventry University Priory Street Coventry , CV1 5FB UK.

Copyright

(Copyright © 2019, Informa - Taylor and Francis Group)

DOI

10.1080/00140139.2018.1514467

PMID

30185116

Abstract

Changes to crewing configurations in commercial airlines are likely as a means of reducing operating costs. To consider the safety implications for a distributed crewing configuration, System Theoretic Accident Model and Processes (STAMP) was applied to a rapid decompression hazard. High level control structures for current operations and distributed crewing are presented. The CONOPS generated by STAMP-STPA for distributed crewing, and design constraints associated with Unsafe Control Actions (UCAs) are offered to progress the route to certification for distributed crewing, and improve safety in current operations. Control loops between stakeholders were created using System-Theoretic Process Analysis (STPA). The factors leading to the Helios 255 incident demonstrated the redundancy that a ground station could offer without the risk of hypoxia, during a decompression incident. STPA analysis also highlighted initial UCAs that could occur within the hypothetical distributed crewing configuration, prompting consideration of design constraints and new CONOPS for ground station design.

Language: en

Keywords

Distributed Crewing; Rapid Decompression; SPO; STAMP; STPA; Safety